Description of problem: When the user list is disabled as is necessary for many-user environments, the username box appears as expected. After typing the username and hitting "next," a second username box appears. Users expect that after the username comes the password, and end up typing their passwords in cleartext in the box. Worse yet is when they fail to notice it and hit enter, causing a failed authentication and their password in the logs. If the user notices the problem and types their username a second time, they are able to login correctly after inputting their password on the next (third) text prompt. Discovered on our lab machines, where NIS is used (hence disabling user list) and home directories are shared (though neither seem to make a difference). Version-Release number of selected component (if applicable): gnome-shell-3.10.3-1.fc20 up to gnome-shell-3.10.4-1.fc20 (current) How reproducible: 100% Steps to Reproduce: 1. Allow the screen to blank while at the login prompt 2. Wake the display (key press, mouse, etc) 3. Input a username and hit "enter" Actual results: Username prompt re-appears Expected results: Password prompt appears Additional info: The bug is not present immediately after reboot. The screen must blank first.
I've seen this happen often as well. The laptops are using freeipa for authentication with the user list disabled.
Same problem here : mine is here -> https://bugzilla.redhat.com/show_bug.cgi?id=1112548 other is here -> https://bugzilla.redhat.com/show_bug.cgi?id=1092274
This appears to be related to an upstream bug here: https://bugzilla.gnome.org/show_bug.cgi?id=729246 There is a patch listed in that bug as a potential fix. Given the high likelihood of users entering their password in the user box (and consequently it being saved in plain text logs and sealed journal logs) I'd suggest this is an actual security issue and although 'unconfirmed' upstream I suggest that it's worth patching into Fedora 20 sooner rather than later. Having applied the patch Jan Hacker provided in the upstream bug the username prompt is not reappearing.
Upstream have merged the patch to fix this. Any chance of getting this into F20 so I can stop overriding the code in puppet?
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